Show 'no answer' option for non-mandatory questions: When a question of a radio button/select type that contains editable answers (i.e.: List & array questions) is not mandatory and this is set to 'Yes' (default), an additional entry 'No answer' is shown for each subquestion - so that participants may choose to not answer the question. Some people prefer this not to be available. Set this to 'No' to turn this off.